Moderate magnitude 4.8 earthquake at 33 km depth28 Sep 00:10 UTC: First to report: AUTH after 2 minutes.I didn't feel itI felt this quakeEarthquake detailsDate & timeSep 28, 2025 00:08:32 UTC - Local time at epicenterSunday, Sep 28, 2025, at 12:08 am (Universal Time GMT +0)Statuspreliminary (automatic detection)Magnitude4.8Depth32.7 kmEpicenter latitude / longitude36.6251°N / 25.7608°EGreeceSeismic antipode36.6251°S / 154.239°WShaking intensityIV Light shaking near epicenterFelt0 reportsPrimary data sourceAUTH (Aristotle University of Thessaloniki Geophysical Lab.)Nearest volcanoKolumbo (27 km / 17 mi)Estimated seismic energy released1 x 1012 joules (278 megawatt hours, equivalent to 239 tons of TNT) | equivalent to ONE quake of magnitude 4.8 | about seismic energy2 minutes agoSep 28, 2025 00:08 GMT / Sep 28, 2025 12:08 am (Universal Time)Lat / Lng: 36.62512 / 25.76077: Santorini Isl. - S. GreeceSource: AUTHDetail info | You felt it? - Report it!';storedMarkers.push(['quake-22209669',36.62512,25.76077,'2 minutes ago: Mag. 4.8, Santorini Isl. - S. Greece',html,'quakes-6-24.png',25,25,12,12,125]); function mkRep(id,notFelt){var nFelt=notFelt||false;var src="https://www.volcanoesandearthquakes.com/app/earthquake-report.php?quakeId="+id;if(nFelt==true){src+="¬Felt=true";}window.open(src,"","status=0,toolbar=0,location=0,directories=0,menubar=0,resizable=1,scrollbars=1,height=400,width=350");} function locationHashChanged(e){-1!=e.oldURL.indexOf("#popupMap")&&closePopup()} window.onhashchange = locationHashChanged; function comment(e){var t=e.parentNode,a=(t.dataset.id,document.getElementById("commentForm"));"none"==a.style.display?(t.appendChild(a),a.style.display="block"):a.style.display="none"}function sendComment(e){var t=e.parentNode,a=t.parentNode.dataset.id,n=document.getElementById("commentContent"),p=n.value.trim();if(p){var o="id="+a+"&quakeId="+thisQuakeId;o+="&comment="+decodeURIComponent(p),mkRequest("//reports.volcanodiscovery.com/app/eqReportComment.php","post",o,function(e){e.responseText;alert("Thank you for submitting your comment!"),t.style.display="none",n.value=""})}}function flagReport(e){var t=e.parentNode.dataset.id;if(confirm("Report this as inappropriate?")){var a="id="+t+"&quakeId="+thisQuakeId+"&flagAsInappropriate=1";mkRequest("//reports.volcanodiscovery.com/app/eqReportComment.php","post",a,function(t){var a=t.responseText;alert(a),e.style.display="none"})}}function likeReport(e){var t="id="+e.parentNode.dataset.id+"&quakeId="+thisQuakeId+"&like=1";mkRequest("//reports.volcanodiscovery.com/app/eqReportComment.php","post",t,function(t){t.responseText;e.style.opacity=.5})}]]>[smaller] [bigger]Most recent quakes Top 20 past 24 hrs Quakes in CreteNearby placesThe closest larger town where the quake might have been felt is Naxos, a town with 7,100 inhabitants in Greece, in 64 km (39 mi) distance northwest of the epicenter. People likely experienced weak shaking there. Many smaller towns and villages are located closer to the epicenter and might have experienced stronger shaking. In the capital of Greece, Athens, 235 km (146 mi) away from the epicenter, the earthquake was probably felt as very weak shaking.The following table shows some of the places that might have been affected (or not) by the shaking.DistancePlaceMax. shaking intensity(*)RegionCountry18 km (11 mi)N of epicenterArkesini(pop: 106)IV: LightNomos Kykladon, South AegeanGreece35 km (22 mi)NW of epicenterPanayia(pop: 211)IV: LightNomos Kykladon, South AegeanGreece38 km (23 mi)NE of epicenterAigiali(pop: 261)IV: LightNomos Kykladon, South AegeanGreece39 km (24 mi)SW of epicenterOia(pop: 3,380)IV: LightNomos Kykladon, South AegeanGreece41 km (25 mi)SW of epicenterEmporeio(pop: 1,950)IV: LightNomos Kykladon, South AegeanGreece44 km (27 mi)W of epicenterIos(pop: 2,020)III: WeakNomos Kykladon, South AegeanGreece53 km (33 mi)NW of epicenterFilotion(pop: 1,480)III: WeakNomos Kykladon, South AegeanGreece53 km (33 mi)E of epicenterAstypalaia(pop: 1,130)III: WeakDodecanese, South AegeanGreece61 km (38 mi)N of epicenterKoronis(pop: 279)III: WeakNomos Kykladon, South AegeanGreece64 km (39 mi)NW of epicenterNaxos(pop: 7,070)III: WeakNomos Kykladon, South AegeanGreece74 km (46 mi)NW of epicenterParos(pop: 5,290)III: WeakNomos Kykladon, South AegeanGreece75 km (47 mi)W of epicenterFolegandros(pop: 667)III: WeakNomos Kykladon, South AegeanGreece99 km (61 mi)NW of epicenterMykonos(pop: 3,780)III: WeakNomos Kykladon, South AegeanGreece104 km (65 mi)NE of epicenterSkala(pop: 1,750)III: WeakDodecanese, South AegeanGreece108 km (67 mi)E of epicenterKefalos(pop: 2,530)III: WeakDodecanese, South AegeanGreece114 km (71 mi)NE of epicenterAgia Marina(pop: 2,740)III: WeakDodecanese, South AegeanGreece115 km (71 mi)NW of epicenterTinos(pop: 4,570)III: WeakNomos Kykladon, South AegeanGreece115 km (71 mi)E of epicenterKalymnos(pop: 12,300)III: WeakDodecanese, South AegeanGreece116 km (72 mi)NW of epicenterErmoúpolis(pop: 11,400)III: Weak116 km (72 mi)NW of epicenterErmoúpolis(pop: 11,400)III: Weak117 km (72 mi)NW of epicenterErmoupolis(pop: 11,400)III: WeakNomos Kykladon, South AegeanGreece118 km (73 mi)W of epicenterAdamantas(pop: 1,350)III: WeakNomos Kykladon, South AegeanGreece120 km (74 mi)NE of epicenterAgios Kirykos(pop: 1,910)III: WeakNomos Samou, North AegeanGreece121 km (75 mi)E of epicenterAntimacheia(pop: 2,250)III: WeakDodecanese, South AegeanGreece139 km (87 mi)E of epicenterKos(pop: 19,200)III: WeakDodecanese, South AegeanGreece141 km (88 mi)E of epicenterTurgutreis(pop: 16,500)III: WeakBodrum, MuglaTurkey147 km (91 mi)E of epicenterYalikavak(pop: 11,200)III: WeakMuglaTurkey148 km (92 mi)S of epicenterSisi(pop: 1000)III: WeakLasithi, CreteGreece149 km (92 mi)S of epicenterLimin Khersonisou(pop: 2,970)III: WeakHeraklion Regional Unit, CreteGreece153 km (95 mi)S of epicenterNea Alikarnassos(pop: 12,900)III: WeakHeraklion Regional Unit, CreteGreece154 km (96 mi)NE of epicenterKarlovasi(pop: 6,710)III: WeakNomos Samou, North AegeanGreece155 km (96 mi)S of epicenterIrakleion(pop: 137,200)III: WeakHeraklion Regional Unit, CreteGreece155 km (97 mi)E of epicenterBodrum(pop: 39,300)III: WeakMuglaTurkey157 km (98 mi)NE of epicenterDidim(pop: 26,000)III: WeakAydinTurkey158 km (98 mi)SW of epicenterGazi(pop: 12,600)III: WeakHeraklion Regional Unit, CreteGreece181 km (113 mi)SW of epicenterRethymno(pop: 32,500)II: Very weakCreteGreece191 km (119 mi)NE of epicenterKusadasi(pop: 63,200)II: Very weakAydinTurkey192 km (119 mi)NE of epicenterSoeke(pop: 68,200)II: Very weakAydinTurkey205 km (127 mi)NE of epicenterSelcuk(pop: 29,100)II: Very weakIzmirTurkey235 km (146 mi)NW of epicenterAthens(pop: 664,000)II: Very weakNomarchia Athinas, AtticaGreeceNotes:(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.User-reports for this quakeThere are no user reports for this quake yet.If you felt it, be the first to report it!Compare Quake DataData for the same earthquake as reported by different agenciesThe more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.MagDepthTime GMT2025-09-28EpicenterAgency4.8833 km20 mi00:08:32.649Santorini Isl. - S. GreeceAUTH (Aristotle University of Thessaloniki Geophysical Lab.)Aftershocks for this quakeNo aftershocks have been recorded so far. When aftershocks are detected, we will update this section.What are aftershocks?Larger earthquakes (above magnitude 5 or so) such as this one are usually followed by smaller ones known as aftershocks that occur in the same area during the days, weeks, months or even years after the main shock.[More info]What about this quake?Based on its magnitude, the fault that was active during the quake likely ruptured beneath a surface area of approximately 6 km2 (2 square miles) as a first-order estimate. The length of the rupture zone thus was probably around 4 km (3 mi).[More info]Recorded aftershocks, latest first (0 quake)Sep 28, 2025 12:08 am (Universal Time)2 minutes ago4.833 km0 km - This quakeSantorini Isl. - S. GreeceMain Shock (this quake)MoreMap of aftershocksEarthquake statisticsAverage number of earthquakesBased on data from the past 55 years and our earthquake archive back to 1900, there are about 3,200 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):Mag. 6 or higher: 0.03 quakes per year (or 1 quake every 31.3 years)Mag. 5 or higher: 0.41 quakes per year (or 1 quake every 2.4 years)Mag. 4 or higher: 38.8 quakes per year (or 3.2 quakes per month)Mag. 3 or higher: 341 quakes per year (or 28.4 quakes per month)Mag. 2 or higher: 1,800 quakes per year (or 4.8 quakes per day)Mag. 1 or higher: 3,200 quakes per year (or 8.7 quakes per day)The area where this quake occurred has a high level of seismic activity. It has had at least 4 quakes above magnitude 6 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 30 to 35 years.Number of quakes per yearPrevious quakes in the same area of this earthquake